While UPSC is entrusted with recruitment to higher civil services: Group ‘A’ and Group ‘B’ civil posts; SSC is a centralized agency responsible for recruiting personal to middle and lower services of central government to various Ministries and their attached & subordinate office) .
All Group ‘B’ posts in Central Ministries & Departments, having maximum pay scale of less than Rs. 10,500 (now revised after 6th pay Commission) .
All non – technical group ‘C’ posts .
SSC was established in 1975 by a resolution of central government on the recommendation of ARC. Originally, it was known as subordinate Services Commission and got its present of an attached office of the Ministry of personnel and acts as an advisory body.